前期准备:
#创建表
create table emp(
id int not null unique auto_increment,
name varchar(20) not null,
sex enum('male','female') not null default 'male',
age int(3) unsigned not null default 28,
hire_date date not null,
post varchar(50),
post_comment varchar(100),
salary double(15,2),
office int,
depart_id int
);
#插入数据
insert into emp(name,sex,age,hire_date,post,salary,office,depart_id)values
('jason','male',18,'20170301','张江第一帅形象代言',7300.33,401,1),
('tom','male',78,'20150302','teacher',1000000.31,401,1),
('kevin','male',81,'20130305','teacher',8300,401,1),
('tony','male',73,'20140701','teacher',3500,401,1),
('owen','male',28,'20121101','teacher',2100,401,1),
('jack','female',18,'20110211','teacher',9000,401,1),
('jenny','male',18,'19000301','teacher',30000,401,1),
('sank','male',48,'20150311','teacher',10000,401,1),
('哈哈','female',48,'20150311','sale',3000.13,'402','2'),
('呵呵','female',38,'20101101','sale',2000.35,'402','2'),
('西西','female',18,'sale','20110312',1000.37,'402','2'),
('乐乐','female',18,'sale','20160513',3000.29,'402','2'),
('拉拉','female',28,'sale','20170127',4000.33,'402','2'),
('僧龙','male',28,'20160311','operation',10000.13,403,3),
('程咬金','male',18,'19970312','operation',18000.13,403,3),
('程咬银','female',18,'20130311','operation',20000,403,3),
('程咬铜','male',18,'20150411','operation',19000,403,3),
('程咬铁','female',18,'20140512','operation',17000,403,3);